Improvement in auger for boring- square holes



' To all whom 'it `may conc-erw I parts `of the cylinder.

latwt @Milice ALFRED T. ERRCINE; v0F LOUISVILLE, KENTUCKY, Assreuou `To HIMSELF l l w ZettersPatentNo.

`AND WILLlAMjO. CHASE, OE PROVIDENCE, RHODE ISLAND 100,440, mm1 Mwah 1, 1870. 'f

IMPROVEMENT I N AUGR :son BORING SQUARE HOLES.

The Schedule referrbd to" in these Letters Patent and making part of the same.v

Be it known that I, ALFRED oT. Pnnnmn, of the `cit y `of Louisville, in the county of Jefferson, in `tlie State of Kentucky, have inventeda new and improved Auger for Boring Square Holes; :in dI 4dolierebydeclare that the following Vis a fullandexact description i thereof, reference being had to the accompanying draw ings and to` the letters `and figures of reference marked thereon 1 i In `the drawings-f.,` Y

Figure 1` shows the `'auger-point and theunder side of theclitters.'v

Figure 2 shows the case open, with the auger in its place, the shouldenand `the inode ol'holding the two Figure 3 shows the. anger l the `band about the case, and resting ou the block of i 'qnirement in the ai'ts-a`l'esiilt long sought for.

` loenable othersskilled inthe artto -mnke and `iuseniy invention, I will proceedto describeL its con-V --struction and operations Y.

I` take a commonauger-bit, `A, suchga-s is' used by l ojoners, to which I attacha,shoulder, lli, (this, oi' `j course, will be cast or forged at the iimeot' making the blank Vfor tl1e`vbit,) which holdsthe case C in place. l This shoulder mustbe rmly made, usit receives the piessure,`which it communicatestothe case O.

The square cylinder of metulC is made either in one single piece, cast' in shape, or in two pieces, as

shown `in the drawings, for convenience oi' adjustment,` with each of the cornersgrouinl into` cutters, 1 D,

,tlriangular inWShape, the side being `cut"a`.`\`vay, the points ofthe cutters being the corners of the case C,

" `and the four-cutters olycorners makingrthe square, within which the anger, in itsY revolution, describes a circle, as shownin tig; 1r i Two sides of the cylinder must be cutaway, to

i allow the chips brought up by the anger to pass out,

asshown in tig. 3.

` The two remaining sides of thecasefare fixed-into a metallic-head, E, madein two parts, with or withiu working order, with "by Letters Patent, is- Y Theroombinution of an anger, A, with the reotan guiar cutting-caseO, longitudinally divided, and conout a hinge-joint, as two set-screws ylike that shown at G would accomplish the same result. l

`Through this head E, a hole, E, is made,in which the neck ofthe auger is placed, and wherein i-t works.

The upper side of this head rests against the shoullder B oi' the'anger.

- The two parts of the head E forma clasp around the neck of the auger, and are kept in place by a As thereisa tendency of the partslof the case, when made in two parts, t o spread apart as the cut- :ters D D are drawn vdown upon and into the wood,

there should beA used a band, H, shown in figs. 4 and 4h, which slides easily upon the case C, audvis placed upon the surl'aoeot' the block as the anger begins to.

enter the wood, as shown in fig.

Having now described the various parts ot' my invention'., I will lbriefly state the practical use of the Ilplace the screw of the bit .or vauger Av, as ordinarily, in the wood into which it is desired to make a 'hole or cavity,I bya gentle thrust, which brings the" i cutters Dv D of the case C very near to the wood. I

then slide the band H down upon the wood, firmly keeping the two parts of` the. case in place. `I then turn the stock, pressing down upon the same in the usual manner, and the bit or auger A is forced into the wood, cutting` away the same, and carrying up the chips in the twist or thread ofthe auger. lhe shoulder B of the bit working uponand pressing` down the head E of the ycase C, the whole is carried downwar l, and, as the' case reaches the wood, the cutters D vD .enter the same, and, following down with the auger,

cut "away the cornerswhich thej angel; has lefnnml finish :1 square hole. '.llie chips from the-corners, fol- :lowing those from the anger, are thrownout of the open sides of thecylinder.

What I claim as my invention, and desire to secure nected hyineans of the yoke or head E and bund 1I, substantially as shown und described.

'.lh'e above specification of my invention is signedl bynie this 28th day of J une, A. D. 1869. 

